Esthetic Colorant for KATANA™ Zirconia by Kuraray Noritake is a set of easy-to-use coloring liquids that disperse in the structure of zirconia, allowing the imitation of a whole range of shades of internal structures. Esthetic Colorant consists of 12 colors. However, by their precise application, typical effects and natural colors can be achieved even before sintering, which makes the restorations optically natural and become a harmonious part of the oral cavity.